This is as helpful and detailed a reference as you'll likely find on iodine or any basic information relating to iodine. Highly recommended.

Chances are, if you need to know anything about iridium, this site will have it. Exceptionally thorough.

A great site for just about anything you could ever need or want to know about actinium.

A great site with a wealth of information on aluminum. Exceptionally thorough and helpful.

An excellent source of information on americium. Very helpful.

A very extensive sight on argon. Well organized and extremely helpful.

This is as thorough as site as you will find for information of all kinds on arsenic. Very helpful.

EnvironmentalChemistry.com offers an extensive site on the element, Einsteinium, of the Periodic Table of Elements.

An exceptionally thorough summary of known information on erbium. Very good site.

Extremely thorough site with all sorts of information on europium. Very helpful resource.

An exceptionally thorough site with almost all the information you could ever want on fermium. Highly recommended.

Great site with as much useful information on francium as you're likely to find anywhere.

Great site for all sorts of information on radon. Very thorough and well organized. Highly recommended.

Great source of information on rhodium. Very thorough.

As the name of this site implies, this is a huge reference site for elemental information. Whether you are looking for properties or isotopes, this site probably has what you need. Images of structure and electron energy level can be...

This site has an extensive amount of information on seaborgium.

Excellent resource for just about anything you could ever want to know about selenium.

Very thorough site with just about everything you could ever need to know about silicon.

A thorough a site on vanadium and its properties. Highly recommended.

As the name of this site implies, this is a huge reference site for elemental information. Whether you are looking for properties or isotopes, this site probably has what you need. Images of structure and electron energy level can be...

Great site with a wealth of data and information on zirconium.

A well designed clear tutorial explaining the energies involved in the Bohr model of the atom. Illustrations add to the clearly presented equations.

A very lengthy page from friesian.com discussing Bohr's theory of electronic energy levels and the explanation of commonly observed atomic emission line spectra. The concept of a photon and Einstein's observation of the photoelectric...

Provides information concerning Wolfgang Pauli's Exclusion Principle. Contains the periodical table of elements.